In the May 11 & 25 SN: High-tech cricket farming, AI learns from Minecraft, looking for lithium, a new hominid species is named, signs of life in dead pig brains, Cherokee cave texts decoded, water molecules on the moon and more.

Letters

ET, stay home
Your excellent editorial in the April 24 issue of Science News (“An intelligent ET would probably just stay home”) explained the most obvious reasons for the unlikelihood of an extraterrestrial message, let alone visitors.

Reading Tom Siegfried’s column on extraterrestrial intelligent civilizations raised an immediate question: Since it is highly likely that older societies with vastly more advanced technologies exist and also likely that these societies use means other than the electromagnetic spectrum for interstellar communication, it seems also likely that ext

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